Apparatus for drawing glass.



W. R. CAMPBELL. APPARATUS FOR DRAWING GLASS. APPLIQATIION FILED JUNE I82, I914.

1,143,104. Patented June 15, 1915.

WI WESSLS INVENTOR field and State of Ohio,

tain new and useful Improvements in Apinto section.

rrn

WILLIAM R. cAMrBEnL, or LANCASTER, OHIO.

APPARATUS son DRAWING-GLASS.

specification of Letters Patent. Patented June 15, 1915.

Application filed June 18, 1914. Serial No. 845,904.

To all 'whom it may concern: 7

Be it known that I, TILLIAM R. CAMP- BELL, of Lancaster, in the county of Fairhave invented cerparatus for Drawing Glass; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates'to an improvement in apparatus for electrically reheating a glass drawing bait.

r Inthe manufacture of glass cylinders or rollers, after the cylinder has been drawn, the bait carrying the cylinder is. disconnect-ed from the drawing apparatus, and the cylinder with the bait attached, is turned to a horizontal position and deposited c a horse which supports it while being cut up It is customary to first disconnect the bait from the cylinder, by severing the cylinder close up to the bait, but he quently, before this can he done, the unequal cooling and consequent contraction of the glass cylinder and metal bait, causes the glass to fracture, which results at times, in the loss of the whole cylinder.

The object of this invention is to provide means for heating or maintaining the contacting parts of the bait and cylinder in a heated condition after the bait has been removed from the drawing apparatus, and up to the time it is severed from the mzlinder, and it consists in the parts and combination of parts as will he more fully explained and pointed out in the claims.

In the accompanying drawings, Figure l is a view in side elevation of one form of apparatus for carrying out my invention;

or otherwise constructed to he heated by an electric current, for maintaining the proper temperatureof the halt and also the glass 1n contact with the halt, during the entire d awing operation, but it may be employed in connection with systems wherein the bait is maintained ii a heated condition loy means other than an electric current, during the drawing operation, and up to the time the bait With the cylinder attached is disconnected and removed from the drawing apparatus.

The apparatus claimed, comprises a horse 1 or ordinary ccmstruction, on which the glass-cyhnder 2 is deposited in a horizontal position after it has been disconnected and removed from the drawing apparatus, and a p a1 r of yielding contacts 3 located in a posltion to engage the bait or conductor leads 4: which have electrical connection with the metal ribbon bait- 5, secured to and carried by the hood 6 of the bait. The ribbon bait 5 is the part to which the glass adheres during the drawing operation, and is the part which is maintained in .a heated condition by a current oi. electricity passed through the leads duringthe drawing operation. The contacts 3 are bell crank in shape and are pivoted'at 7 to the frame 8 located adjacent one end of the horse 1. The longer upright arms of the contacts 3 are curved at their upper ends as shown in Fig. 3, so as to permit of the ready and easy entrance of the leads t-l between them, and they are cornicctcd at the free ends of their shorter horizontal arms to springs 0 which yieldingly hold the contacts in position to be engaged by the leads 4-, and which are free to give or separate under the wei ht of the leads; Each contact 3 is connected with a conductor 10 both of which are connected with a current transformer other source of supply. 'lhetranie R is provided with the saddle 1:2 located in a position to receive and surmort the Freight of the. leads a and partoi the we of the hait 56 when the cylinder is is.

ting on the horse 1. soon as the leads l: engage the cr 'ICtS ,the circuit through the ribbon 5 1 be closed thus heating the same and maintaining it in a-heatcd conditionso long as the loads remain in contact with the contacts By maintaining the bait and the glass adhering thereto, at approximately the same temperature, any undue contraction of either part is prevented and great saving is offected by avoiding breakage.

Having fully described my invention what I claim as newand desire to secure by Letters-Patent, is

1. The herein described apparatus for electrically reheating a glass drawing bait after the latter and an attached glass cylinder have been removed from a glass drawing apparatus consisting of a bait adapted to be heatedelectrically, conductor leads in communication with said bait, a horse for the glass cylinder, and two separated contacts located adjacent one end of the horse and each connected with conductor, the said contacts adapted to make connection with the conductor leads on the bait as the cylinder is deposited on the horse, whereby the circuit will be automatically closed and the bait and the attached end of the glass cylinder heated. I I

'2. The combination of a horse, two yielding contacts, at the front end of the latter,

an electric conductor for each contact, and a glass drawing bait having conductor leads adapted to automatically contact with the yielding contacts as the glass cylinder and its attached bait are deposited on the horse.

3.? The combination with means for supporting a glass cylinder in a horizontal position, two contacts adjacent one end of said supporting means, means alsoadjacenlt sald end of the cylinder supporting means for supporting the bait, an electric conductor for each contact and a glass drawing bait having conductor leads adapted to make contact with said contacts as the glass cylinder and its attached bait are deposited on the cylinder and bait supporting means.

4. The'combination of a horse, bait sup 

